Event: Division 2

Opponent Rating Result
Andrew Penn 1771 ½ - ½
Freddie Pick 1992 1 - 0
A Clive Walley 1923 1 - 0
Chris M Strong 1796 0 - 1
Richard J Johnson 1909 1 - 0
Hayden Griffiths 1767 1 - 0
Thomas Ash 1738 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1957 = (12896 + 400 * (4 - 2)) / 7)

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